बढ़ते परमाणु द्रव्यमान के आधार पर तत्वों की पहली व्यापक रूप से मान्यता प्राप्त आवर्त सारणी किसने तैयार की थी?

The arrival of which commission in India triggered widespread protests, including mass hartals across the country in 1928?

Which of the following leaders was instrumental in initiating and leading India’s struggle for independence?

Which of the following viceroys of India is associated with the 'Ilbert Bill' controversy?